Bone registration in two-stage orthopedic revision procedures

Abstract

A method for registering a bone is provided that includes the installation of two or more registration markers on an exposed portion of the bone as part of a first stage of a revision. An image data set of the bone is generated to create imaged registration markers. A surgical plan is generated for implanting one or more secondary implants in a second stage of the two-stage procedure based on the image data. The bone is registered to the surgical plan and a computer-assist device using the two or more registration markers by: digitizing a set of positions of the two or more registration markers to create digitized registration markers; and mapping the set of positions of the digitized registration markers with a corresponding set of positions of the imaged registration markers. A system for performing the method is provided. Implant revision is promoted through the use of the method.

Description

RELATED APPLICATIONS[0001]This application claims priority benefit of U.S. Provisional Application Ser. No. 62 / 629,954 filed 13 Feb. 2018; the contents of which are hereby incorporated by reference.TECHNICAL FIELD[0002]The present invention generally relates to the field of computer-assisted orthopedic revision surgery, and more particularly to a system and method for registering a bone in two-stage orthopedic revision procedures.BACKGROUND[0003]Computer-assisted orthopedic surgery is an expanding field having applications in total joint arthroplasty (TJA), bone fracture repair, maxillofacial reconstruction, and spinal reconstruction. Computer-assisted surgical systems generally aid in the planning and execution of an orthopedic procedure. For example, the TSOLUTION ONE® Surgical System (THINK Surgical, Inc., Fremont, Calif.) aids in the planning and execution of total hip arthroplasty (THA) and total knee arthroplasty (TKA). The TSOLUTION ONE® Surgical System includes: a pre-operat...

AI Technical Summary

Benefits of technology

This patent describes a method for revision surgeries on bones associated with implants. The method involves first installing markers on the bone during the first stage of the revision procedure and then using those markers to create an image data set of the bone. A surgical plan is then generated based on the image data for the second stage of the procedure. During the second stage of the procedure, the bone is re-exposed and registered to the surgical plan and a computer-assist device using the two or more registration markers. This allows for the accurate placement of secondary implants and reduces the likelihood of complications during the revision procedure. The patent also describes a system that helps with the performance of this method.

Problems solved by technology

However, the tasks required to perform these registration procedures are tedious.

Even though pin-based registration is quick and reliable, the additional pre-operative procedure of pin implantation can be invasive and cause residual pain.

One cause of implant failure is infection.

However, much of the bone has been amputated from the primary procedure, reducing the number of viable locations to collect registration points, and ultimately making the registration procedure in revision cases difficult to execute.

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